Oil mist purification device for environmental protection

Abstract

The invention relates to the field of environmental protection equipment, in particular to an oil mist purification device for environmental protection. The device comprises a shell, a centrifugal part, a first cleaning and dredging part, a flow guide part, a second filter screen and a second cleaning and dredging part. A gas collecting cylinder, an adjusting cylinder and a guide cylinder are arranged in the shell; the side wall of the gas collecting cylinder is opened and is provided with a filter screen I; the adjusting cylinder rotates at the original point in the shell, and a first communicating opening is formed in the side wall of the adjusting cylinder. The guide cylinder is slidably sleeved on the periphery of the adjusting cylinder, and the side wall of the guide cylinder is provided with a communication port II and a chute; the centrifugal part is arranged in the adjusting cylinder; the first cleaning and dredging piece is located on the inner wall of the adjusting cylinder. The flow guide part is positioned on the sealing side of the flow guide cavity; the second filter screen is arranged in the flow guide cavity and located on one side of the sliding groove. The second cleaning and dredging piece is located on the outer wall of the adjusting cylinder. According to the invention, the adjusting cylinder is taken as a core, and the originally independent purification, cleaning and control functions are organically integrated into a dynamic, collaborative and self-maintenance oil mist purification system.

Description

Technical Field

[0001] This invention relates to the field of environmental protection equipment, and more particularly to an oil mist purification device for environmental protection. Background Technology

[0002] In industrial production, oil mist purification equipment is typically required in processes involving the use of oil-based or water-based coolants and lubricants, and in high-speed, high-temperature operations that generate oil mist, fumes, or oil vapors. This is primarily seen in metal processing (such as CNC cutting, grinding, rolling, and quenching), as well as some non-metallic processing, food frying, and power generation. Its core purpose is to: protect employee health, preventing respiratory illnesses and skin allergies; eliminate fire hazards and slippery surfaces; maintain the precision and lifespan of processing equipment; and ultimately ensure that the production environment meets the mandatory requirements of occupational health and environmental regulations.

[0003] Chinese Patent CN112275078B discloses an oil mist removal and purification device. This device includes a housing, a centrifugal impeller, and a filter assembly disposed within the housing. The housing has an air inlet and an air outlet, which are connected. The centrifugal impeller is disposed within the housing, facing the air inlet. The filter assembly is disposed within the housing, and oil mist exhaust gas flows through the filter assembly to the air outlet. The filter assembly includes a packing layer spaced around the outer periphery of the centrifugal impeller.

[0004] The aforementioned oil mist purification device has the following shortcomings: The various functional areas of the device (oil removal, dehumidification, and deodorization) are relatively independent in their control logic, lacking linkage and proactiveness. The core purification units (such as the packing layer and filter screen) are in a fixed state, with oil mist pollutants passively adhering. As operating time increases, the packing layer will become saturated with oil, reducing its adsorption efficiency and potentially causing "caking," increasing airflow resistance; the filter screen will inevitably become clogged, leading to reduced airflow and increased pressure loss. Although spray cleaning is implemented, this is a periodic, passive maintenance method that cannot address the real-time performance degradation during continuous purification. Maintenance requires shutdown and manual operation, disrupting production continuity. For example, the immersion cleaning mode of the spray components requires inserting a sealing plate and switching valves, which is an offline operation. These maintenance steps not only increase labor costs and downtime but also demonstrate the device's insufficient automation in terms of "online, non-disassembly maintenance." Summary of the Invention

[0005] To address the problems existing in the background technology, an oil mist purification device for environmental protection is proposed. Through a linkage design with the regulating cylinder as the core, passive maintenance is transformed into active maintenance, and the originally independent purification, cleaning and control functions are organically integrated into a dynamic, collaborative and self-maintaining oil mist purification system.

[0006] This invention proposes an oil mist purification device for environmental protection, comprising a shell, a centrifugal component, a first cleaning and unblocking component, a guide component, a second filter screen, and the second cleaning and unblocking component. The shell includes a top cover, side shells, and a base; the top cover has a gas collecting pipe and a drive seat, the side shells have an air outlet, and the base has a sludge collection box. Inside the shell, a gas collecting cylinder, an adjusting cylinder, and a guide cylinder are coaxially arranged from the inside out. The gas collecting cylinder connects to the gas collecting pipe, has an opening in its side wall, and is equipped with the first filter screen. The adjusting cylinder is driven by the drive seat to rotate at its origin within the shell, and has a first connecting port on its side wall. The guide cylinder is slidably fitted onto the outer periphery of the adjusting cylinder, and has a second connecting port and a sliding groove on its side wall. An annular adsorbent filling cavity is formed between the gas collecting cylinder and the adjusting cylinder. A C-shaped guide cavity is formed between the guide cylinder and the side shell. One end of the guide cavity near the second connecting port is sealed, and the other end connects to the air outlet. The centrifugal component is located inside the adjusting cylinder to centrifuge and remove oil from the gas collected by the gas collecting pipe. The first cleaning and unblocking component is located on the inner wall of the adjusting cylinder. It penetrates the adsorbent filling cavity and rotates synchronously with the filter screen as the regulating cylinder rotates. On the one hand, it cleans and unblocks the filter screen, and on the other hand, it agitates the adsorbent filling. The guide component is located on the sealing side of the guide cavity, guiding the gas outlet of the second connecting port to move along the guide cavity and toward the gas outlet. The second filter screen is set in the guide cavity and is located on one side of the slide groove. The second cleaning and unblocking component is located on the outer wall of the regulating cylinder and extends into the guide cavity through the slide groove. It moves closer to or away from the second filter screen as the regulating cylinder rotates. On the one hand, it cleans and unblocks the second filter screen, and on the other hand, it guides the gas in the guide cavity. As the regulating cylinder rotates, the second connecting port and the first connecting port are connected or staggered. When the second connecting port and the first connecting port are connected, the first cleaning and unblocking component and the first filter screen are staggered, and the second cleaning and unblocking component and the second filter screen are far apart.

[0007] Preferably, a first drain pipe is provided on the base corresponding to the first filter screen, which is connected to the adsorbent filling chamber; a second drain pipe is provided on the base corresponding to the second filter screen, which is connected to the guide chamber; and a third drain pipe is provided on the base corresponding to the gas collecting cylinder. Valves are provided on the first, second, and third drain pipes to connect to the sludge collecting box.

[0008] Preferably, a dustproof net and an air collecting fan are installed inside the air collecting pipe.

[0009] Preferably, the centrifugal component includes a mounting bracket located inside the regulating cylinder; centrifugal blades are provided on the mounting bracket; multiple sets of openings with filters are provided along the centrifugal blades on the regulating cylinder; and a guide shroud is provided on the air inlet end of the centrifugal blades.

[0010] Preferably, the flow guide is configured as a cone-shaped structure with a small front end and a large rear end, and the side wall is provided with flow guide grooves that spread outwards with an opening containing a filter screen.

[0011] Preferably, multiple sets of cleaning and unblocking components are provided in a one-to-one correspondence with the openings with filters. Each set of cleaning and unblocking components includes a through rod connected to the inner wall of the regulating cylinder. The end of the through rod faces the air collecting cylinder and is provided with a cleaning rack.

[0012] Preferably, the cleaning rack has an arc-shaped structure with the concave surface facing the air collection cylinder and a groove provided on the concave surface; the groove is provided with elastic unblocking protrusions; and a pusher is provided on the through rod.

[0013] Preferably, a sealing plate is provided on the sealing side of the flow guiding cavity; the sealing plate is located on one side of the second communication port; the flow guiding component includes a rotating seat located on the sealing plate; the flow guiding fan is provided on the rotating seat.

[0014] Preferably, the second cleaning and unblocking component includes a tail end connected to the outer wall of the adjusting cylinder, and an end end extending into the guide cavity via a sliding groove; the end of the connecting rod is provided with a cleaning and unblocking seat; and a movable and rotatable cleaning and unblocking frame is provided on the cleaning and unblocking seat.

[0015] Preferably, the cleaning and unblocking base has a frame structure with a slide rail on the frame wall; a slider is installed on the slide rail; the cleaning and unblocking frame is rotatably mounted on the slider to achieve horizontal movement and rotation, and a cleaning and unblocking strip is installed on the outer wall of the cleaning and unblocking frame.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects: The rotation of the regulating cylinder serves as the core driving force, enabling multi-functional synchronous linkage: the rotational motion of the regulating cylinder is the "heart" of the entire device's dynamic operation. Through precise structural design, it simultaneously transmits power to all stages of purification, cleaning, and control, achieving highly efficient linkage where "everything moves in unison." Its linkage effect is specifically reflected in the following four aspects: 1. Optimization of Airflow Path Cyclic Switching and Purification Stages: By adjusting the rotation of the regulating cylinder, the connecting port one on its wall and the connecting port two on the guide cylinder are periodically connected or staggered, achieving rhythm control of purification and regeneration. When the connecting ports are aligned, the device is in "high-efficiency purification mode," and the airflow passes through centrifugation, adsorption, and fine filtration sequentially before being discharged. When the connecting ports are staggered, the mainstream airflow is cut off, providing a brief "static regeneration" window for the adsorbent filling chamber, while allowing the cleaning system to operate without affecting the overall purification efficiency. In non-working states or during cleaning cycles, staggering the connecting ports effectively prevents untreated oil mist gas from directly short-circuiting to the outlet, ensuring the quality of the emitted gas under any circumstances. 2. Online, Automatic Cleaning of Filter Screen 1 and Agitation of Adsorbent: The cleaning and unblocking components on the inner wall of the collection cylinder rotate synchronously, allowing the cleaning rack and unblocking protrusions to continuously or periodically scrape and clean the filter screen 1 on the outer wall of the collection cylinder. Simultaneously, the through rod and pusher rotate within the adsorbent filling chamber, agitating the adsorbent. This automatic cleaning function effectively prevents oil buildup and blockage on the filter screen 1, ensuring smooth gas flow after centrifugation, maintaining a stable processing airflow, and avoiding increased pressure loss and energy consumption due to blockage. The continuous agitation of the adsorbent breaks up the "caking" phenomenon easily caused by oil mist adhesion, keeping it in a loose state. This not only allows for more even distribution of the adsorbent, fully utilizing its adsorption capacity, but also exposes new adsorption surfaces, significantly slowing down the adsorption saturation rate and reducing the frequency of adsorbent replacement and operating costs. 3. Intelligent switching between cleaning and flow guiding modes: By adjusting the rotation of the cylinder, the cleaning and unblocking components on its outer wall engage with the sliding grooves on the flow guiding cylinder, allowing the cleaning and unblocking seat to periodically move closer to or further away from the filter screen. When the cleaning and unblocking seat approaches the filter screen, the cleaning and unblocking rack scrapes it to remove attached oil and dirt, ensuring the final filtration effect. When it moves away, cleaning stops to avoid unnecessary wear or interference when the filter screen is already clean. During the phase of moving away from the filter screen, the movement of the cleaning and unblocking rack can disturb and guide the airflow in the flow guiding cavity, improve the flow field distribution, and prevent gas from stagnating in dead corners, thereby improving filtration efficiency and the smoothness of the overall airflow organization. 4. Intelligent Management of Start-up and Shutdown Status: By presetting the initial position of the regulating cylinder, the connection port is staggered when the device is stopped, and the opening of the cleaning and unblocking component 1 covers the filter screen 1. During non-working periods, covering the filter screen 1 effectively prevents dust and debris from entering the adsorbent filling chamber and the inside of the equipment, providing good protection and avoiding contamination of the equipment during idle periods; Ultimately, the series of interconnected mechanisms driven by the rotation of the regulating cylinder together constitute the significant advantages of this device over traditional designs. Multi-stage purification (centrifugation, adsorption, and filtration) ensures a high pollutant removal rate. The interconnected self-cleaning system guarantees that each purification unit is always in optimal working condition, enabling the entire system to maintain high purification efficiency long-term and stably without performance degradation. Automated cleaning fundamentally solves the pain points of traditional equipment requiring frequent shutdowns, disassembly, cleaning, or filter media replacement. It significantly reduces manual maintenance workload, downtime, and the purchase and disposal costs of consumables, achieving "unmanned" operation and maintenance. Continuous cleaning prevents the hardening and accumulation of oil stains, reducing corrosion and load on the fan and structure. The agitation of the adsorbent prevents its failure and caking, all of which greatly extend the service life of core components. Attached Figure Description

[0017] Figure 1 Structural diagram of an oil mist purification device for environmental protection; Figure 2 Exploded view of an oil mist purification device for environmental protection; Figure 3 This is a diagram of the internal structure of the shell (viewpoint 1). Figure 4 This is a diagram of the internal structure of the shell (perspective two). Figure 5 This is a breakdown diagram of the gas collecting cylinder, regulating cylinder, and guide cylinder. Figure 6 Here is a structural diagram of the centrifuge component; Figure 7 This is a structural diagram of a cleaning and unclogging component. Figure 8 for Figure 4 Enlarged view of point A in the middle; Figure 9 Here is a structural diagram of the cleaning and unblocking component 2; Reference numerals: 1. Shell; 101. Side shell; 102. Top cover; 103. Sealing plate; 2. Air collecting pipe; 3. Air outlet; 4. Sludge collection box; 5. Sludge outlet pipe two; 6. Sludge outlet pipe one; 7. Drive base; 8. Adjusting cylinder; 9. Air collecting cylinder; 10. Flow guide cylinder; 11. Centrifugal component; 1101. Mounting bracket; 1102. Centrifugal impeller; 1103. Flow guide cover; 1104. Flow guide groove; 12. Filter screen one; 13. Connecting port two; 14. 15. Connecting port 1; 16. Slide groove; 17. Cleaning and unblocking component 1; 18. Cleaning rack; 19. Unblocking protrusion; 10. Through rod; 10. Pushing frame; 11. Cleaning and unblocking component 2; 12. Cleaning and unblocking seat; 13. Connecting rod; 14. Cleaning and unblocking rack; 15. Cleaning and unblocking strip; 16. Slide rail; 17. Filter screen 2; 18. Guide component; 19. Rotating seat; 19. Guide fan. Detailed Implementation

[0018] Example 1, as Figures 1-5As shown, this invention proposes an oil mist purification device for environmental protection, including a housing 1, a centrifugal component 11, a first cleaning and unblocking component 16, a guide component 19, a second filter screen 18, and a second cleaning and unblocking component 17. The housing 1 includes an upper cover 102, a side shell 101, and a base; the upper cover 102 is provided with an air collecting pipe 2 and a drive seat 7, the side shell 101 is provided with an air outlet 3, and the base is provided with a sludge collection box 4. Inside the housing 1, an air collecting cylinder 9, an adjusting cylinder 8, and a guide cylinder 10 are coaxially arranged from the inside to the outside; the air collecting cylinder 9 is connected to the air collecting pipe 2, has an opening in its side wall, and is provided with a first filter screen 12; the adjusting cylinder 8 is driven by the drive seat 7 to rotate at the origin within the housing 1, and has a first connecting port 14 on its side wall. The guide tube 10 is slidably sleeved on the outer periphery of the regulating tube 8, and a connecting port 13 and a sliding groove 15 are provided on the side wall; an annular adsorbent filling cavity is formed between the gas collecting tube 9 and the regulating tube 8; a C-shaped guide cavity is formed between the guide tube 10 and the side shell 101; one end of the guide cavity near the connecting port 13 is sealed, and the other end is connected to the gas outlet 3; the centrifugal component 11 is set inside the regulating tube 8 to centrifuge and deoil the gas collected by the gas collecting tube 2; the cleaning and unblocking component 16 is located in the regulating tube 8. The inner wall of the regulating cylinder 8 extends through the adsorbent filling cavity and rotates synchronously with the filter screen 12 as the regulating cylinder 8 rotates. This cleans and unblocks the filter screen 12 and agitates the adsorbent. The guide component 19 is located on the sealing side of the guide cavity and guides the gas outlet of the connecting port 13 to move along the guide cavity towards the outlet 3. The filter screen 18 is located in the guide cavity and on one side of the slide groove 15. The cleaning and unblocking component 17 is located on the outer wall of the regulating cylinder 8 and extends into the guide cavity through the slide groove 15. It moves closer to or further away from the filter screen 18 synchronously with the rotation of the regulating cylinder 8. This cleans and unblocks the filter screen 18 and guides the gas in the guide cavity. As the regulating cylinder 8 rotates, the connecting port 13 and the connecting port 14 are connected or staggered. When the connecting port 13 and the connecting port 14 are connected, the cleaning and unblocking component 16 and the filter screen 12 are staggered, and the cleaning and unblocking component 17 and the filter screen 18 are moved away from each other.

[0019] It should be further explained that the base is equipped with a drain pipe 6 connected to the adsorbent filling chamber corresponding to filter screen 12, and a drain pipe 5 connected to the guide chamber corresponding to filter screen 28; a detachable drain pipe 3 is provided corresponding to the air collecting cylinder 9; valves are provided on drain pipe 6, drain pipe 25 and drain pipe 3 to connect to the sludge collection box 4; filter screen 12 and filter screen 28 intercept oil mist particles, and after cleaning and unblocking parts 16 and 217 work, the cleaned oil can enter the sludge collection box 4 through drain pipe 6, drain pipe 25 and drain pipe 3.

[0020] It should be further explained that a dustproof net and a gas collecting fan are installed inside the gas collecting pipe 2 to collect oil mist air in the environment and promote its entry into the gas collecting cylinder 9.

[0021] like Figure 1-6As shown, the centrifugal component 11 includes a mounting bracket 1101 located inside the regulating cylinder 8; an electrically controlled rotating centrifugal blade 1102 is mounted on the mounting bracket 1101; multiple sets of openings with filter screens 12 are arranged along the centrifugal blades 1102 on the regulating cylinder 8; a guide shroud 1103 is provided on the air inlet end of the centrifugal blades 1102; the centrifugal component 11 utilizes high-speed rotation to generate a strong centrifugal force, throwing oil mist particles with a density much greater than that of gas from the airflow and causing them to collide and accumulate on the wall of the regulating cylinder 8, thus achieving preliminary purification of the oil mist. When the opening with filter screens 12 is not covered by the cleaning and unblocking component 16, some oil mist enters the adsorbent filling chamber through the filter screens 12. The adsorbent can adsorb the oil mist particles, and the gas can pass through the adsorbent. When the connecting port 2 13 and the connecting port 14 are connected, the gas enters the guide chamber.

[0022] It should be further explained that the adsorbent used is granular hydrophobic activated carbon with a particle size between 2-4 mm. It achieves the best balance between adsorption performance, airflow resistance, cost and ease of use, and can effectively capture micron- and submicron-sized oil mist particles and gaseous organic matter remaining after preliminary centrifugation treatment, ensuring that the device achieves high overall purification efficiency.

[0023] It should be further explained that the flow guide 1103 is configured as a cone structure with a small front end and a large rear end, and the side wall is provided with flow guide grooves 1104 that spread outwards with the filter screen 12; by setting the flow guide 1103 to guide the incoming gas, it can achieve directional centrifugation more efficiently.

[0024] like Figure 7 As shown, multiple sets of cleaning and unblocking components 16 are provided corresponding to the openings of the filter screen 12. Each set of cleaning and unblocking components 16 includes a through rod 1603 connected to the inner wall of the regulating cylinder 8. The end of the through rod 1603 faces the air collecting cylinder 9 and is provided with a cleaning frame 1601. The cleaning frame 1601 rotates with the regulating cylinder 8 and controls the opening and closing of the opening with the filter screen 12 by sliding connection to the outer wall of the air collecting cylinder 9.

[0025] It should be further explained that the cleaning rack 1601 has an arc-shaped structure, with its concave surface facing the air collecting cylinder 9, and a groove is provided on the concave surface; an elastic unblocking protrusion 1602 is provided in the groove; a pushing frame 1604 is provided on the through rod 1603; the cleaning and unblocking component 16 rotates synchronously with the adjusting cylinder 8. During the rotation, the through rod 1603 and the pushing frame 1604 can agitate the adsorbent, making it evenly distributed and ensuring the adsorption effect. At the same time, the cleaning rack 1601 and the unblocking protrusion 1602 can clean and unblock the filter screen 12. In the non-working state, the cleaning rack 1601 directly covers the opening to reduce the entry of dust and debris.

[0026] like Figure 8As shown, a sealing plate 103 is provided on the sealing side of the flow guiding cavity; the sealing plate 103 is located on one side of the second connecting port 13; the flow guiding component 19 includes a rotating seat 1901 located on the sealing plate 103; the flow guiding fan 1902 is provided on the rotating seat 1901; the second connecting port 13 and the first connecting port 14 are staggered when the device is not in operation, at which time the cleaning rack 1601 covers the opening, and the second cleaning and unblocking component 17 and the second filter screen 18 are close together. When the second connecting port 13 and the first connecting port 14 are connected, the collected gas enters the sealing side of the flow guiding cavity from the second connecting port 13, the flow guiding fan 1902 works, pushing the gas toward the opening side of the flow guiding cavity, accelerating the subsequent purification process.

[0027] like Figure 9 As shown, the cleaning and unblocking component 17 includes a connecting rod 1702 whose tail end connects to the outer wall of the adjusting cylinder 8, and whose end extends into the guide cavity through a sliding groove 15. A cleaning and unblocking seat 1701 is provided at the end of the connecting rod 1702. A movable and rotatable cleaning and unblocking frame 1703 is provided on the cleaning and unblocking seat 1701. As the adjusting cylinder 8 rotates, the connecting rod 1702 slides along the sliding groove 15, causing the cleaning and unblocking seat 1701 to move closer to or further away from the filter screen 18. When the cleaning and unblocking seat 1701 is close to the filter screen 18, the cleaning and unblocking frame 1703 cleans and unblocks the filter screen 18 by moving and rotating. When the cleaning and unblocking seat 1701 is away from the filter screen 18, the cleaning and unblocking frame 1703 guides the gas in the guide cavity by moving and rotating.

[0028] It should be further explained that the cleaning and unblocking seat 1701 has a frame structure with a slide rail 1705 on the frame wall; a slider is installed on the slide rail 1705; the cleaning and unblocking rack 1703 is rotatably mounted on the slider to achieve horizontal movement and rotation; a cleaning and unblocking strip 1704 is installed on the outer wall of the cleaning and unblocking rack 1703; by moving and rotating, the cleaning and unblocking rack 1703 can scrape off the oil stains on the filter screen 18 to achieve the purpose of cleaning and unblocking, and can promote airflow to achieve the purpose of guiding flow.

[0029] Example 2: Based on the oil mist purification device for environmental protection described in the above examples, this example proposes an oil mist purification method, the steps of which are as follows: S1. Oil mist collection and primary centrifugal oil removal: When the device is started, the air collecting fan inside the air collecting pipe 2 begins to work, drawing oil-mist-laden air from the environment into the air collecting pipe. The dust filter inside the pipe first intercepts larger dust particles and debris. The oil-mist-laden air enters the air collecting cylinder 9 and impacts the centrifugal blades 1102 of the centrifugal component 11. The high-speed rotating blades generate a powerful centrifugal force, throwing most of the denser oil mist droplets towards the inner wall of the regulating cylinder 8. The thrown oil droplets form an oil film on the inner wall of the regulating cylinder 8. The guide shroud 1103 and its guide grooves 1104 ensure that the airflow is efficiently guided to the surrounding filter screen 12 area, optimizing the centrifugal effect. S2, Adsorption purification and airflow path switching: After undergoing primary centrifugal degreasing, the airflow passes through the filter screen 12 and enters the adsorbent filling chamber when the regulating cylinder 8 rotates until its opening is not completely covered by the cleaning and unblocking component 16. The adsorbent in the filling chamber, such as activated carbon, effectively adsorbs the tiny oil mist particles and organic vapors that penetrate the filter screen, allowing the gas to pass through. When the drive seat 7 rotates the regulating cylinder 8 until its connecting port 14 aligns with the connecting port 13 on the guide cylinder 10, the adsorbed and purified gas enters the sealed end of the guide chamber from the adsorbent filling chamber. S3, Fine filtration and flow diversion: The gas entering the guide cavity is propelled by the guide fan 1902 of the guide component 19, flowing along the C-shaped guide cavity towards the outlet 3. During this flow, the gas must pass through the filter screen 18 installed in the guide cavity. This filter screen 18 serves as a final safeguard, intercepting any residual fine particles that may escape, ensuring the cleanliness of the discharged air. Finally, the completely purified clean gas is discharged from the outlet 3 on the side wall of the housing. S4. Online cleaning and waste collection and purification processes are carried out simultaneously or intermittently: As the regulating cylinder 8 rotates, the cleaning and unblocking component 16 rotates accordingly. Its cleaning rack 1601 and unblocking protrusions 1602 scrape and clean the surface of the filter screen 12, preventing blockage. Simultaneously, the through rod 1603 and the pushing frame 1604 continuously agitate the adsorbent during rotation, ensuring even distribution, preventing caking, and maintaining high adsorption efficiency. The cleaned-off oil falls into the collection box 4 through the drain pipe 6 under gravity. Similarly, as the regulating cylinder 8 rotates, the cleaning and unblocking component 17 moves within the guide cavity via the slide groove 15. When it approaches the filter screen 18, the cleaning and unblocking rack 1703 moves and rotates, using the cleaning and unblocking strip 1704 to scrape away the accumulated dirt on the filter screen; when it moves away, its movement guides the airflow. The removed waste is discharged into the collection box 4 through the drain pipe 5. Regularly cleaning or replacing the collection box 4 completes the closed loop of oil mist purification and waste recycling.

[0030] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. An oil mist purifying device for environmental protection, characterized by comprising: include: The housing (1) includes a top cover (102), a side shell (101), and a base; the top cover (102) is provided with an air collecting pipe (2) and a drive seat (7), the side shell (101) is provided with an air outlet (3), and the base is provided with a sludge collection box (4). Inside the housing (1), an air collecting cylinder (9), an adjusting cylinder (8), and a guide cylinder (10) are coaxially arranged from the inside to the outside; the air collecting cylinder (9) is connected to the air collecting pipe (2), and the side wall is open and provided with a filter screen (12); the adjusting cylinder (8) is driven by the drive seat (7) The device rotates at the origin within the housing (1). A connecting port (14) is provided on the side wall of the regulating cylinder (8). The guide cylinder (10) is slidably sleeved on the outer periphery of the regulating cylinder (8). A connecting port (13) and a sliding groove (15) are provided on the side wall. An annular adsorbent filling cavity is formed between the gas collecting cylinder (9) and the regulating cylinder (8). A C-shaped guide cavity is formed between the guide cylinder (10) and the side housing (101). One end of the guide cavity near the connecting port (13) is sealed, and the other end is connected to the gas outlet (3). Centrifugal element (11) is installed inside the regulating cylinder (8) to centrifuge and deoil the gas collected by the gas collecting pipe (2); Cleaning and unblocking component 1 (16) is located on the inner wall of the regulating cylinder (8) and penetrates the adsorbent filling cavity. It rotates synchronously with the filter screen 1 (12) as the regulating cylinder (8) rotates. On the one hand, it cleans and unblocks the filter screen 1 (12), and on the other hand, it stirs the filled adsorbent. The guide (19) is located on the sealing side of the guide cavity, guiding the air outlet of the second (13) to move along the guide cavity and toward the air outlet (3); Filter screen two (18) is set in the flow guide cavity and located on one side of the slide groove (15); And cleaning and unblocking component two (17), which is located on the outer wall of the regulating cylinder (8) and extends into the guide cavity through the slide groove (15). It moves closer to or further away from the filter screen two (18) in sync with the rotation of the regulating cylinder (8), cleaning and unblocking the filter screen two (18) on the one hand, and guiding the gas in the guide cavity on the other hand. As the regulating cylinder (8) rotates, the second connecting port (13) and the first connecting port (14) are connected or staggered; when the second connecting port (13) and the first connecting port (14) are connected, the first cleaning and unblocking component (16) and the first filter screen (12) are staggered, and the second cleaning and unblocking component (17) and the second filter screen (18) are far apart.

2. The oil mist coalescer for environmental protection according to claim 1, characterized by A sludge outlet pipe 1 (6) is provided on the base corresponding to filter screen 1 (12) to connect to the adsorbent filling chamber, a sludge outlet pipe 2 (5) is provided on the base corresponding to filter screen 2 (18) to connect to the flow guiding chamber, and a detachable sludge outlet pipe 3 is provided on the base corresponding to the air collecting cylinder (9); valves are provided on sludge outlet pipe 1 (6), sludge outlet pipe 2 (5) and sludge outlet pipe 3 to connect to the sludge collecting box (4).

3. The oil mist purification device for environmental protection according to claim 1, characterized in that, A dustproof net and a gas collecting fan are installed inside the gas collecting pipe (2).

4. The oil mist purification device for environmental protection according to claim 1, characterized in that, The centrifugal component (11) includes a mounting bracket (1101) located inside the regulating cylinder (8); centrifugal blades (1102) are provided on the mounting bracket (1101); Multiple sets of filter screens (12) are provided along the centrifugal blades (1102) on the regulating cylinder (8); A deflector (1103) is provided on the air inlet end of the centrifugal blade (1102).

5. The oil mist purification device for environmental protection according to claim 4, characterized in that, The flow guide (1103) is configured as a cone structure with a small front end and a large rear end, and the side wall is provided with a flow guide groove (1104) with an opening that spreads outwards to the surrounding area with a filter screen (12).

6. The oil mist purification device for environmental protection according to claim 4, characterized in that, Multiple sets of cleaning and unblocking components (16) and the opening of the filter screen (12) are provided one-to-one. Each set of cleaning and unblocking components (16) includes a through rod (1603) connected to the inner wall of the regulating cylinder (8). The end of the through rod (1603) faces the air collecting cylinder (9) and is provided with a cleaning rack (1601).

7. The oil mist purification device for environmental protection according to claim 6, characterized in that, The cleaning rack (1601) has an arc-shaped structure with its concave surface facing the air collection cylinder (9) and a groove is provided on the concave surface; an elastic unblocking protrusion (1602) is provided in the groove. A pusher frame (1604) is installed on the through rod (1603).

8. The oil mist purification device for environmental protection according to claim 1, characterized in that, A sealing plate (103) is provided on the sealing side of the flow guide cavity; the sealing plate (103) is located on one side of the connecting port two (13); the flow guide (19) includes a rotating seat (1901) located on the sealing plate (103); the flow guide fan (1902) is provided on the rotating seat (1901).

9. The oil mist purification device for environmental protection according to claim 1, characterized in that, The second cleaning and unblocking component (17) includes a connecting rod (1702) that is connected to the outer wall of the adjusting cylinder (8) at the tail end and extends into the guide cavity through the slide groove (15) at the end; a cleaning and unblocking seat (1701) is provided at the end of the connecting rod (1702); and a movable and rotatable cleaning and unblocking rack (1703) is provided on the cleaning and unblocking seat (1701).

10. The oil mist purification device for environmental protection according to claim 9, characterized in that, The cleaning and unblocking seat (1701) has a frame structure, and a slide rail (1705) is installed on the frame wall; a slider is installed on the slide rail (1705); The cleaning and unblocking rack (1703) is mounted on the slider to achieve horizontal movement and rotation, and a cleaning and unblocking strip (1704) is provided on the outer wall of the cleaning and unblocking rack (1703).

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